Gasolene-dispensing pump.



L J. MACBETH.

GASBLENE DISPENSING PUMP 7 APPLICATION FIVLED AUGJ. I918 Patented Apr. 29,1919.

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J. MACBET'H; 01E DAYTUN, OHIG.

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Specification of Letters Patent.

Patented Apr. 29, 11919.

Application filed August 1, 191a. Serial No. 247,827.

T 0 all whom it may concern 1 Be it known that I, Jnnmron'r J Mao- BETH, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Gasolene-Dispensing Pumps, of which the following is a specification.

This invention relates to certain improvements in gasolene or kerosene oil dispensing The object of the invention is to provide a pump ofthis character with a capacity for discharging given quantities of gasolene or kerosene oil to purchasers with accuracy so that it may be known that the correct quantity or quantities purchased are being delivered, said pump having the struc tural characteristics hereinafter described and claimed. in the accompanying drawings Figure 1 is a side elevation of a gasolene or kerosene oil pump constructed inaccordance with my invention, and Fig. 2 is a front elevation thereof.

In a detail description of the said invention similar reference characters indicate corresponding parts in the drawings. The gasolene or kerosene oil is pumped into a tank 1 which is located at the top of the frame structure and is discharged from said tank through a spout 2 which communicates with the lower portion of the chamber of said tank through a valve 3. The chamber member or tank 1 issupported upon an open frame 4 which extends upright from the pump base 5 which rests upon the floor. The tank 1 has a glass indicator tube 6 on a side thereof which communicates with the chamber of the tank and records the level of the gasolene in said chamber. Cooperating with the indicator tube 6 is a calibrated scale 7 arranged adjacent thereto on the tank 1 to indicate the quantity of gasolene or kerosene discharged by the pump through the spout 2. Located in the lower portion of the pump frame is a gasolene pump consisting of cylinder 8 and a piston 9 which is driven from a piston rod 101 having fixed to the upper-end thereof a rack 11. The cylinder 8 receives through suction, gasolene alternately above and below the piston 9 from the pipe 27 which pipe connects with the source of supply of gasolene. The said gasolne is forced out by said piston 9 through a discharge pipe 12 which extends up-to the top of the tank 1 and discharges therein. The pipe 2'? communicates with the upper and lower ends of the cylinder 8 through valves 27 and 28 which are operated automatically to open at one end of the cyhnder and close at the other end through the suction and pressure created through the reversing of the piston 9. The gasolene discharge pipe 12 has arranged at the top and bottom of the cylinder 8 communications controlled by valves 13 and 14: which are similarly operated andwhich control the passages between the cylinderS and the pipe 12. 15 designates a twin air cylinder mount ed beside the cylinder 8 and having a piston 16 which drivesa rod 17 connected thereto and a rack 18 connected to said rod. 19 designates a gearwheel which is engaged on opposite sides by the racks 11 and 18 so that when said gear wheel 19 is driven by the air actuated piston 16 to the gasolene piston 9 is likewise driven to pump the gasolene up through the pipe 12. The shaft 20 of the gear wheel 19 is journaled in bearing parts 21 that extend across the pump frame and the said shaft has an. end 22 shaped to receive a crank handle by which the pump may be operated manually should the air supply fail. 23 designates an air supply pipe for the piston 16 extending from a source'of compressed air. This pipe 23 extends from the source of compressed air and communicates with the upper and lower ends of the air cylinder 15 through valves 24 and 25 to admit air under compression above and below said piston 16 to drive the same and therewith the rack 18, gear 19 and the gasolene piston 9. This air pipe 23' also communicates with the top of the tank 1 and air is admitted to the interior of the tank through a valve 26 to accelerate the discharge of gasolene through the spout 2 when the valve 3 is open. The pipe 27 connects with the bottom of the tank 1 through an apertured member 28 to which the outlet spout 2 is also connected. This pipe 27 also acts as a drain for any excess gasolcne that may be discharged into the tank 1. When thus used the valve 29 is opened. The operation of the pump is as follows:

It being desired to discharge a given quantity of gasolene from'the pump, the valves 24 and 25 of air pipe 23 are opened alternately to admit air to drive the piston 16. The gear wheel 19 is thus operated to drive the gasolene piston 9 until the requisite amount of gasolene, determined upon by the tube 6, enters the tank 1. The discharge spout 2 is then opened by turning the valve 3 to discharge the quantity of gasolene so indicated from the pump and the air valve 26 is opened to force the oil more rapidly out through the spout 2. 7

Having described my invention I claim:

1. In agasolene dispensing pump, a frame, a gasolene tank mounted thereon havinga. quantity-measuring indicator, :1 gasolene pump, a gasolene supply pipe communicating with said pump, a, gasolene discharge pipe communicating with said pump and said 'tank, an air-driven motor geared to the gasolene pump, and an air supply pipe supplying air to said motor and to the upper portion of the gasolene tank, substantially as specified.

2. In a gasolene dispensing pump, the combination with a supporting base and frame, of a gasolene tank Supported in said frame, twin cylinders mounted on said base having pistons therein and constituting a gasolene pump and a motor respectively for said gasolene pump, a gasolene supply pipe communicating with the lower portion of said tank and with the gasolene pump, a

means for operating said pump and supplying air pressure to the upper portion of the tank, substantially as specified.

In testimon whereof I aifix my signature.

REMONT J. WACBETH. 

